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If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

What causes the formation of ocean currents?